Class: Mode::Connector::Selector

Inherits:
Object
  • Object
show all
Defined in:
lib/mode/connector/selector.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(query, data_source) ⇒ Selector

Returns a new instance of Selector.



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# File 'lib/mode/connector/selector.rb', line 13

def initialize(query, data_source)
  @query, @data_source = query, data_source
  @count, @column_types = 0, Mode::Connector::TypeMap.new
end

Instance Attribute Details

#column_types ⇒ Object (readonly)

Returns the value of attribute column_types.



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# File 'lib/mode/connector/selector.rb', line 11

def column_types
  @column_types
end

#count ⇒ Object (readonly)

Returns the value of attribute count.



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# File 'lib/mode/connector/selector.rb', line 10

def count
  @count
end

#data_source ⇒ Object (readonly)

Returns the value of attribute data_source.



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# File 'lib/mode/connector/selector.rb', line 8

def data_source
  @data_source
end

#query ⇒ Object (readonly)

Returns the value of attribute query.



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# File 'lib/mode/connector/selector.rb', line 7

def query
  @query
end

Instance Method Details

#path ⇒ Object 



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# File 'lib/mode/connector/selector.rb', line 23

def path
  @path ||= File.join(tmpdir, 'data.json')
end

#perform! ⇒ Object 



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# File 'lib/mode/connector/selector.rb', line 18

def perform!
  File.open(path, 'w+') { |file| write(file) }
  Mode::Connector::Dataset.new(path, count, column_types)
end